Music-leaf turner.



A. GASPERETH & C. DALBONI.

MUSIC LEAF TURNER. APPLICATION mm D.EC.!4,;..|914.

v v i6 9 144 Patented Jan. 25,1916.

2 SHEETS-SHEET I.

TIIB COLUMBIA PLArjodmH cm. WASHINGTON, D. C.

A. GASPERETT! & C. DALBONI.

MUSIC LEAF TURNER. APPLICATIQNFILED use. 4. 1914.

1,169,144. Patented Jan. 25, 1916.

2 SHEETS-SHEET 2.

THE COLUMBIA PLANOGIAPH CO" WASHINGTON. D. C-

UNITED, STATES PATENT .oF-ruon.

AN' vIBALE GAS'PE'RETTI AND CARL-0 nnmaonror NEW YORK, 1:. Y. Y

MUSIC-LEAF TURNER;

To all whom itmay concern GARLO-DALBONI, a subject of the" King ofItaly, .residing at New York, borough of Specification'of Let tersPatent.

Manhattan, in the'countyand State of Now which the following is a'specification.

Our invention relates to improvements-in devices for: turning sheetmusic, especially in the form of books consisting of a number of leavesbound together with or without covers; and in its preferred embodiment;it comprlses suitable mechamsmf'or engags ing the sheets or leaves,operable at will to turn the sheetsin'succession till theend of themusical;-composition*uponrthe face 1 of the sheets is reached.

The primary object of our' invention is to. rovide a device ofthe kindmentioned,

which will afford positive and certain en gagement of themechanismlwith'? the sheets;

so that'thesheets cani be turned over one after anotheruin "a mannerthat is both quick and infallible; l

The above and other objects and advantages of our invention will appearfrom the following description taken in connection "ward, the sheets: ofmusic 3. The central with the accompanying drawings,ywhich show apreferred form of our invention; the

same characters of reference beingwusedto indicate the samepartsthro'ughout the several views.

On said drawings Figure l isan'elevation showing our invention attachedto a stand for supporting sheet music "commonly used by violini'sts.-Fig.:2is a front elevation of comprising our invention in one position.F 1g. 7 1s a view similar to F1g. 6, showing the same-parts in theposition they occupy: at the-end of the sheet turning operation? and F1g.8.1s a perspective view of a detail,

illustrating themann'er in which the mech-1 anism we employ takes holdof the sheets of music to turn them over.

In the particular description of theidraw- 1ngs,-we use'the numeral Itoindicatea stand for supporting music of the kind com- Patented Jan. 25,1916.

Application filed December ,4, 1914. Serial No.8-75,457.

, 5 monlyused by violinists. *Thiszstand coms Be it known that We,fhNNIBALE GASPE-y RETT'I, a citizenof the United States, and.

prlses a post consistingof anumber of tubuother andi are extensible-sothat-the stand carriesiat its top amusic rest 2- and has legs y can becollapsed to .be packed-in the musi- 'cians-case or setup at will Thisstand York, have invented certain new and useful Y Improvements in'Music-Leaf Turners,v of

at the bottom -which can be folded up against. the lowermost section inthe usual way. When-the standis being used,-the

.variousparts are held in fixed relationwith each otherby means screws.

Further description of the, standis not plainly shown in Fig. 1 andwelllmown to those skilledin the art. I Furthermore various kinds ofstands may be used in connection withour. invention and the oneshown ofsuitable binding on the, drawings is intended merely as a con Iventlonal illllSLIittlOIltO show onemethod of applying our invention.Obviously, our music turnin'gdevice may be employed in combination withthe music rest-of a piano or anyother instrument; The rest 2 may also.be of any suitable-type, consisting of parts rigid-with eachother; oradapted to -be-folded-together', so as to carry in convenient position,inclining slightly backmemberof therest is shown at 4, andit may thereoftwo angleabarsfi, forminga shelf to engage thebottom-edgesof the sheets3.

-Each of 'thesheets 3 will have on the" face ,thereof, which is theuppenface, when the sheetisturned *OVel' 'tO the rightaof the centralframe member 4; an 'engageable body inthe-form'of a flap-6 having apointed end7- and? an opening:: 8.. Thesew flaps may be made of'eelluloid parchment; paper. or' any; other suitable :material, and arepreferably have 1 pivotally connected to the:- bottom;

.;attachedf.=by'pasting-them along their upper edges-to the sheets 3near the lower corners of thesheets, in such-position that the points 7will extend towardwthe inner: or bound .edgesuof the sheets: These flapsarefree' alongalhthe edges except the'upper edges,- and-Pas they aremade of thing, but: somewhat stiff material, they will not appreciablyincrease thethickness of the sheets to which they are attached. 'Whenthe bookof mu- 7 sic isclosed; the flaps will be-pressed tightlyagai'nst faces of the sheets; but.whenthe book is openedythe :pointedend -7 will extend away from the faces of the sheets to a slight 70believed to be necessary, as the parts are' extent; being bent so as togive'it a suiiicient permanent set for this purpose. In order to turnthe sheets, the flaps are engaged by suitable means carried by a pivotarm 9, which revolves in a plane substantially normal to the rest 2, aswe shall now set forth.

To the uper end of the uppermost tubular section of the stand 1, weattach a sleeve 10 in which is received the lower end of a bent shank11. The upper end of the shank passes into a socket formed by a plate12, secured to the back of an angle plate 13. This angle plate supportsthe music rest 2 and the back thereof may have a groove 14: to receivethe lower end of the frame member at. The back of this angle plate 13may also be slotted at the middle of the groove 14 and the bottom of theframe member 4: may have a bolt extending therefrom to pass into theslot and be engaged by a binding nut to secure the member 1 and theangle plate 13 together. This bolt and binding nut are shown at 15, andit will be seen that when the rest 2- is secured to the angle plate,that the back and bottom of this angle plate will be substantiallyparallel to the back and bottom respectively of the angle bars To thelower side of the bottom or front portion of the angle plate 13, wesecure a casing 16, providing a bearing for a spindle 17. This spindlealso passes through the angle plate 13, and is encircled by means of acoil spring 18, secured thereto into the inside'casing 16. The spindle17 also carries inside the casing 16 and rigid thereon a drum 19, whichhas fixed thereto one end of an operating cord or chain 20. This cord orchain 20 passes through an opening in the casing 16 and over a groovedguide wheel 21, carried by the sleeve 10, into the tubular sectionsmaking up the post of the stand 1. The pulley 21 is suitably jo-urnaledin projections carried by the sleeve 10, and both this sleeve and thelower end of the bent shank 11 will be shaped so as to give free passageto the cord or chain 20, as clearly shown in Fig. 5. The upper end ofthe spindle 17 carries above the front portion of the angle plate 13 ahead 22. This head 22 has a pair of lugs 23, between which is pivotallymounted a short arm 24. This arm has a collar thereon at its outer end,inclicated at 25, and the outer face of this collar carries a boss whichfits into an aperture in an end of the arm 9, above mentioned; a bindingscrew 26 being used to secure the arm 9 and short arm 21 to ether. Thisarm 9 carries a pivoted lever 2 mounted thereon, adjacent the screw 26,and carrying at its outer extremity an upturned pin 28. Preferably thearm 27 is provided with ears at its pivoted end, which receive the arm 9between them; (see Figs. 2 and 5); and the arm 9 may be recessed aroundthe pivot pm to receive a 0011 spring shown at 27 1n F1 g.

41, which normally tends to force the lever 27 and arm 9 apart.

At its outer end, the lever 27 is bent forward adjacent the pin 28,forming a lateral extension 29, upon which is pivotally mounteda lockingdog 30. As shown in Fig. 8, this locking dog 30 has a curved aperturedend 31, and the opposite end is heavier than the end 31, so thatnormally this dog will be in vertical position. The adjacent end of thearm 9 carries a projection or finger 32 on the top thereof, locatedabove the level of the pivot of the locking dog 30, and extending beyondthe end of the arm 9, which arm will terminate short of the dog 30 whenthe arm and lever are forced together, as will be presently set forth.Consequently, when the arm and lever come together, as shown in Figs. 2and 3, the finger 32 will strike the up-curved end 31 of the dog andthrow it into substantially horizontal position.

The outer end of the extension 29 of the lever 27 is bent parallel tothe lever 27 toward the pivot thereof to provide a projection 33,adapted to be engaged by a locking bolt 31, slidably mounted in a borein the outer end of the arm 9. This bolt 31 is normally forced outwardby a spring at the inner end of the bore, as shown in Fig. i, and it hasa pin 35 projecting through a slot 36 at the top of the arm 9, to limitthe outward movement. Hence, when the lever 27 and arm 9 are forcedtogether, they will be locked against the compression of the spring 27,and will remain locked until released.

In the practice of our invention, the arm 9 and lever 27 come togetherwhen the head 22 revolves to the right, referring to Figs. 2, 3 and 4,and are unlocked when they revolve in the opposite direction. For thispurpose,

we provide the angle bar 5 at the left with a projection 37 in positionto engage the pin 35 when the arm and lever swing over to the left, andforce the pin toward the inner end of the arm 9; whereby the bolt 34will be drawn and the lever 27 released. Of course, the slot in thegroove 14 in the back of the angle plate 13 which receives the lockingbolt 15 terminates at such a point that these angle bars will be spaceda sufiicient distance from .the bottom portion of the angle plate 13 toallow the arm 9 and lever 27 to move below them, and we provide the twoangle bars 5 with recesses 5 to avoid interfering with the pin 28, dog30, and pin .35 when the arm and lever are in either extreme position.The lever 27 is provided with an upstanding lug 38 offset laterally ofthe lever and located so as to be struck by quickly enough when thelever 27 is released.

plate than the spindle 17 had particularly toFigs l, Gand 7.:,Adja-.-

angle plate, we pivot Referring again tothe short arm 24,:it

will be seen by referringto Figs. 1 and .6' that we provide the head25with a projection 39 this projection extending toward the head 22 andbeing below the body of the arm 24 soasto provide a: space or recess;

The arm24 being pivoted tothe head 22 :sO as to swing up and ,down in avertical plane; it willbe seen that the projection 29Hwi1l limitdownward movement of the short varm.

24cby engagingfront or bottom portion of the angle plate 13.Weniount-onthe front portionof this angle plate a curved strip 40 whichprovides a circular track for the pro- 1 jection 39, and this track 40extends from right to left and terminates at the left in a; beveledend,.located aslightly greater 'distance' from the back portion of theangle reference being surface of the track a slight distance past-thebeveledend; the front edgeof this projection being also beveledandtherear edge being abrupt.

As shown in Fig. .4, the bridge piece 41 is locatedinward-of the edge ofthe front portion ofthe angle-plate 13,

whereby a drop-is provided for the projection 39 beyond the lateralprojection 42 and the relative thickness of the track bridge piece 11and projection .39 is such that when the projection 39 passes beyond theprojection 42 anddrops off the same, the top of the projection 39 :willbe below ;the.pro-- jection 4:2, as shown plainly in ,Figs. 6. and 7.The bridge piece 41 is pivoted'to the plate 13 by means of perforatedlugs and a spring head encircling the ,..pivot pin is shown. in Fig. 4:to-holdthebridge piece down.

To the back we pivot a curved resilient finger 43, which is engaged byfront portion of the angle plate so as to hold the fingerdownward-against the'front portionof the angle plateobetween thelateralprojection 42 of the "bridge piece 41 and the upon the leaves 3and. prevent them from being blown over without. interfering with theoperat1on of our invention. The function and utility of ourimprovementwill now be plain. Normally, the spring 18 rotates. the shaft17 to throw thearm 19 'andalesg behindthe pointed end of the curvedtrackpiecej40s piece 40, 1

, ver together portion of the angle: plate. 13,

3, by means of fiap 18 to movethe arm and lever to the left and turn thesheets.

Suppose, for. example, the parts be considered with reference to theirposition I shown ,in:'-Fig.;&; the;lever 27 being urged at its ve'r27'to the right, anda pull on the cord 20 will rotate thepshaft 17againstthespr ng outer. end away from .theibar 9 by the spring themovingapart of the arm and lever more certain; The lever 27 willtherefore cause the pin 28 to come into contact with the sheet 3 to beturned, at a point inward of tllGFflEtP 6; the PlI1128 entering therecess 5 in the right hand angle bar 5 far enough-to tion of the :arm9;to the right forces pin 28 7 of the flap 6; and the outer ends of thebegin to move toward each other. When the ,pin*28-reaches the aperture8, the finger 32 on the arm .9 strikes the curved end 31 of the lockingdog 30 and throws it toward thesheet 3. As a result, the opening in theend 31 of thedogreceives the upper end of the pin 28 and. completes thelocking engagement of the dog and pin with the flap 6. Simultaneously,the .bolt 84. passes behind the projection 33and locks the arm and le-The pin. 28 will always pass behind the flap '6, because it naturallypresses against the sheet or leaf'to be turned as it slides along theface of the same towarduthis flapythis condition being clearlyindicatedin Fig. 4. By making theends 7 of the-:flap pointed, thepassing of the pin 28 behind the=fiap canbe rendered certain -1n every.case; because this pointedend will prefer to curve the pointed ends 7of'the a spring {141, securedto the flapsoutward by working them withthe fingers; so as to give them a slight permanent These ends will,-

I to whichtherbook is closed; but as fast as backof the angle plate, asshown in Fig.6.

This finger 43 is lifted by the short arm 24,

each flapiisuncovered by turning a sheet the polntedend '7 will assumethe necessary out- I ward. extending position to obviate everypossibility'of the turning device failing to engage 'the.-sheet in theproper manner.

This much of the operation is effected by the spring 18." The cord orchain 20 is now pulled, rotating the The arm 9 and lever 27 now pull thesheet 6, out from under the clamp 45 and turn itover.

and lever have revolved far enough to the spindle 17 to the left. 1

When the arm arm and levernow left to occupy the position shown inbroken lines. in-Fig; 3, theprojection 37 will push 85 permit thisaction."Thecontinued revoluback the pin 35 to release the lever 27, andthe projection 37 will then engage the lug 38 to cooperate with thespring 27 to separate the arm and lever. As soon as this hap- I pens,the finger 32 having moved away from the locking dog 30, the heavier endof the locking dog opposite the curved end 81 drops; thus disengagingthe upper end of the pin 28. About this time also, the pro jection 89passes beyond the inner edge of the projection 42 of the bridge piece11; whereby the weight of the arm and lever will cause these two partsto revolve the short arm 24: around its pivotal connection with the head22, downward far enough to enable the pin 28 to be withdrawn behind theflap 6, and thus release the same. The completion of the turningoperation is effected by the top of the short arm 24: engaging thebottom of the curved finger 413, and raising it against the tension ofthe spring 14, as shown in Fig. 7 to engage the reverse side of thesheet 3 near its bound edge and force it down fiat against the cover orsheets that have been turned before it. The upper face of the arm 2% maybe beveled for this purpose. The cord or chain 20 is now released andthe spring 18 moves the arm 9 and lever 27 to the right again. Inreturning, the projection 39 passes under the lateral projection 42 ofthe bridge piece 41; riding easily upward over the beveled end of thetrack piece 10 to the top of the same, and the operation can berepeated.

e prefer to lead the cord or chain 20 down through the tubular sections,making the post of the stand 1, and actuate the same by means of a pedalat the bottom of the stand so as to leave the hands of the musicianentirely free. The actuating device in question is shown in Fig. 1, andit is in the form of a bellows comprising a pair of heads 46 connectedby a web of sheet rubber or leather l7. On the top of the upper head 46is a plate 18, secured to the head at its ends, but spaced from the headbetween the ends. The pressure of the foot on this plate will collapsethe bellows, as will be readily understood. The head 16 is perforatedbelow the plate 48, and an ordinary flap valve of cloth or any othersuitable material may be secured to the head and located between thesame and the plate 48, to cover the perforations; these perforationspermitting air to pass into and out of the bellows. The flap valve isindicated by the numeral 49.

To the heads 46 we pivot two pairs of links 50; the links of each pairbeing pivotally connected together, thus providing a double togglepoint. To the pivot ends of one pair of links, namely the pair shown atthe right, we secure one end of a flexible, tubular casing 51 for theoperating cord or chain, and to the pivot ends of the pair of links atthe left, we secure a boss having an aperture to receive a bolt throughwhich the end of the cord or chain 20 is adapted to be fastened. Thisbolt will carry an adj usting nut 52. It will now be seen that when themusician presses downward with his foot on the plate 418, the links 50will cause a pull to be exerted on the end of the cord 20 to throw thearm 9 and lever 27 to the left. At this time, the flap a9 lifts andallows the air in the bellows to escape. hen, however, the musicianmoves his foot from the plate 48, thus releasing the bel lows, thespring 18 can move the arm and lever to the right. When this actiontakes place, however, the spring pulls the cord in the other direction,and the cord then actuates the links 50 to distend heads d6 and torestore the bellows to operative position. The flap valve 49 now tendsto close, and a partial vacuumj'thus results inside the bellows. Theflap 4:9 is not perfectly air tight and restricts the inflow of airjust'enough to prevent the heads l6 from distending too rapidly. Hence,the bellows will act as a sort of cushion to retard the action of thespring 18 and prevent the spring from throwing over the arm 9 and lever27 to the right too suddenly. Thereby the danger of parts becomingdamaged is greatly reduced.

\Ve wish to have it understood that the above disclosure is illustrativeonly, and we reserve the right to make such changes in the shape, sizeand arrangement of the parts as fairly fall within the scope and spiritof the appended claims.

Having described our invention, what we believe to be new and desire toprotect by Letters Patent of the United States is:

1. In a device of the kind described, the combination of a body securedto a sheet to be turned, and having a portion free to move with respectto the sheet, a member adapted to be first passed behind the body, andmeans movable with reference to said member after said member passesbehind the body, to cooperate with said member in the engagement of thebody, whereby the body can be actuated to turn the sheet.

2. A turning device for sheets of music, comprising an arm movable on apivot at one end thereof, a lever pivoted on the arm remote from thesaid end, means for revolving the arm and the lever bodily around thepivot of said arm, means for locking the arm and lever to each other,engaging means carried by the device and actuated to move into operativeposition with respect to a sheet of music when the arm and the levercome together, means for then revolving the arm and the lever in theopposite direction to turn the sheet, and means for unlocking the armand the lever from each other and releasing the sheet when the turninghas been effected. V

3. In a device of the kind described, the

combination of a music rest, a rotatable head carried by a platesupporting the rest, a short arm connected to the head by a pivotparallel to the plate, an arm connected to thefirst arm, a lever pivotedto the second arm intermediate the ends of the latter, an upstanding pinand a perforated locking dog on the outer end of the lever, a finger onthe second arm to actuate the dog, a bolt for locking the second arm andlever together, means on the rest for releasing the second arm andlever, a track piece having a sloping end on the plate to support thefirst arm, a bridge piece providing a drop for the second arm at the endof the track 15 piece, and a finger actuated by the first arm, locatedadjacent the track piece.

In testimony whereof, We have signed our names to this specification inthe presence of two subscribing Witnesses, this 21st day of 20 November1914.

ANNIBALE GASPERETTI. CARLO DALBON I. Witnesses:

WILLIAM F. NICKEL, H. BIRNBAOH.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. 0.

